WO2020098552A1

WO2020098552A1 - Connector, motor end cap having the connector, and motor having the end cap

Info

Publication number: WO2020098552A1
Application number: PCT/CN2019/116114
Authority: WO
Inventors: 詹大泫; 桑蒂连约翰·劳伦斯; 王乔才; 林健楼
Original assignee: 广东德昌电机有限公司
Priority date: 2018-11-14
Filing date: 2019-11-06
Publication date: 2020-05-22
Also published as: CN111193352A; CN111193352B

Abstract

A connector (50), comprising a connector housing and an embedded piece (53). The connector housing comprises a base part (51) and a connector sidewall (52) that are integrally formed. The connector sidewall (52) is formed by extending from the periphery of the base part (51). The connector sidewall (52) is provided at the end away from the base part (51) with an opening. The embedded piece (53) is detachably connected to the connector housing. The embedded piece (53) is provided thereon with a groove (530) extending from the opening towards the base part (51). The connector (50) reduces processing costs and mitigates risks of a difference in motor acoustic performance.

Description

Connector, motor end cap with the connector, and motor with the end cap

Technical field

The invention relates to the technical field of motors, in particular to a connector, a motor end cover with the connector, and a motor with the end cover.

Background technique

The motor usually includes a stator, a rotor and an end cover, where the stator serves as a stationary part and the rotor serves as a rotating part, and the end cover is often used to install components such as brushes. Some end caps include an end cap body and a female connector; after processing the end cap, a female connector is often connected to a male connector to realize power supply. In order to avoid the incorrect connection of the unsuitable male and female connectors, especially for different motors installed at the same position (such as the steering column adjustment device of the vehicle), it is necessary to avoid the wrong connection through the differentiated connector. In the existing design, the female connector is usually integrally formed on the motor end cover. Therefore, when the shape of the connector of the end cover needs to be changed, the entire connector and even the entire end cover need to be redesigned and matched The production molds and processing tools need to be replaced accordingly, which not only greatly increases the processing cost, prolongs the cycle of processing and inspection, but also easily causes dimensional deviations, resulting in the risk of differences in the acoustic performance of the motor.

technical problem

An object of the present invention is to provide a connector capable of solving the above problems, a motor end cover having the connector, and a motor having the end cover.

Technical solution

According to an aspect of the present invention, there is provided a connector including a connector housing and an insert, the connector housing including an integrally formed base portion and a connector side wall, the connector side wall is from the outside of the base portion After being extended, the side wall of the connector forms an opening at the end away from the base, the insert is detachably connected to the connector housing, and the insert is provided with a recess extending from the opening toward the base groove.

Preferably, the insert includes a body portion and a limiting portion, the limiting portion extends outward from the top end of the body portion and is folded, and an accommodation is formed between the limiting portion and the body portion A gap, the accommodating gap is used for accommodating the corresponding top end of the side wall of the connector.

Preferably, the limit portion and the top end of the body portion are both in an inverted U shape, the outer side of the limit portion is flush with the outer side of the side wall of the connector where the corresponding top end is located, and the top end of the limit portion is connected to The other top ends of the head side wall except the corresponding top ends are on the same horizontal plane.

Preferably, the limiting portion and the top end of the body portion are both in an inverted U shape, and a corresponding top end of the side wall of the connector is provided with an accommodating groove for accommodating the limiting portion.

Preferably, the insert further includes another limiting portion, the other limiting portion extends from a bottom end of the body portion, and the base portion is provided with a position corresponding to the bottom end of the body portion. The other limiting portion is snapped into the matching snap hole.

Preferably, the other limiting portion is a substantially L-shaped elastic member extending from the bottom end of the body portion, a step is formed in the locking hole, and the elastic member is hung on the The bottom end of the steps.

Preferably, the other limiting portion is two substantially L-shaped elastic members extending from the bottom end of the body portion, and two steps are formed at the bottom of the snap hole, and the two elastic The pieces are hung on the bottom of the corresponding steps.

Preferably, the body portion is substantially plate-shaped, and the left and right ends of the body portion are in contact with the inner sides of the side walls of the two adjacent connectors.

Preferably, the groove penetrates the body portion along the thickness direction of the body portion.

Preferably, it further includes a terminal, the side wall of the connector on one side of the connector housing is provided with a communication notch, and the base portion is provided with an insertion groove for inserting the terminal.

Preferably, it further includes a terminal provided on the base part by insert molding, one end of the terminal is located in the side wall of the connector and extends from the base part toward the opening, and the other end of the terminal is located The side wall of the connector is outside.

According to another aspect of the present invention, there is provided a motor end cover including an end cover housing and the connector provided in one aspect of the present invention, the end cover housing includes an end cover housing and a mounting portion, the end The cover housing is generally hollow and cylindrical, the mounting portion is vertically provided in the end cover housing and divides the space in the end cover housing into two cavities, the base portion is connected to the outer side of the end cover housing, the end The cover shell, the mounting part, the base part and the side wall of the connector are integrally formed.

Preferably, the motor end cover further includes a circuit board, an inductor and a brush, the circuit board is provided on the mounting portion and located in one of the cavities, and the inductor and the brush are provided on the mounting portion and located in the other cavity in vivo.

According to still another aspect of the present invention, there is provided a motor including a stator and a rotor, the stator includes a stator housing and a permanent magnet fixed to an inner wall of the stator housing, the rotor includes a rotating shaft, a core fixed on the rotating shaft and commutation And the winding wound on the iron core, further comprising the motor end cover provided in another aspect of the present invention, the motor end cover being connected to one end of the stator housing.

Beneficial effect

The connector provided in the present invention is detachably connected to the connector housing, and only needs a specific insert to match different male connectors without changing the design of the rest of the connector. Compared with the prior art, the end cap including the connector provided by the present invention can avoid redesigning and processing the entire end cap, effectively reducing the processing cost and shortening the processing cycle; at the same time, it also avoids the occurrence of different processing processes Dimensional deviations help to reduce the risk of differences in motor acoustic performance.

BRIEF DESCRIPTION

Further features of the present invention will become more clear from the following description of preferred embodiments, which are provided by way of example only in conjunction with the drawings, where:

FIG. 1 is a perspective view of a motor according to a first embodiment of the invention;

Figure 2 is an exploded schematic view of the motor shown in Figure 1;

3 is a schematic structural view of the end cover of the motor shown in FIG. 2;

4 is a schematic diagram of another angle of the end cap shown in FIG. 3;

FIG. 5 is a schematic diagram of the end cap shown in FIG. 3, with some parts removed;

6 is a schematic structural view of the connector housing of the end cap shown in FIG. 5;

7 is a schematic structural view of the insert of the end cap shown in FIG. 5;

8 is a partial exploded view of the end cap shown in FIG. 5;

9 is a schematic view from another angle of the portion of the end cap shown in FIG. 7;

10 is a schematic diagram of various types of female connectors and male connectors mated with them;

11 is a partial schematic view of the end cover in the second embodiment of the motor of the present invention;

12 is an exploded view of the connector in the third embodiment of the motor of the present invention;

13 is a partial schematic view of the end cover in the fourth embodiment of the motor of the present invention;

14 is a schematic structural view of the insert of the end cap shown in FIG. 13;

15 is a schematic structural view of the connector housing of the end cap shown in FIG. 13;

16 is a schematic structural view of the connector housing shown in FIG. 15 from another angle.

Embodiments of the invention

In order to make the objectives and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be clear that the effects of the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

As shown in FIGS. 1 and 2, the motor of the first embodiment of the present invention includes a stator, a rotor, and a motor end cover 3. The stator includes a stator housing 1 and a permanent magnet 10, wherein the stator housing 1 is substantially hollow and cylindrical, and has an opening at one end, and a positioning notch 12 is provided at the edge of the open end, and the permanent magnet 10 is fixed to the inner wall of the stator housing 1. The rotor is disposed in the stator, and includes a rotating shaft 2, an iron core 20 and a commutator 21 fixed on the rotating shaft 2, and a winding wound on the iron core 20. The iron core 20 includes a plurality of circumferentially distributed teeth centered on the rotating shaft 2, a wire groove is formed between adjacent teeth, and the winding is wound in the wire groove; sheet. The motor end cover 3 is fixed at the opening of the housing 1. In this embodiment, a top plate 11 is further provided on the end of the motor end cover 3 away from the housing 1. The end of the motor end cover 3 adjacent to the top plate 11 is provided with a housing positioning protrusion 30, a top plate positioning protrusion 31 and a top plate fixing portion 32; the housing positioning protrusion 30 faces the stator housing 1 and cooperates with the positioning notch 12 on the stator housing 1 so The stator is positioned circumferentially; the top plate positioning protrusion 31 faces the top plate 11, and the edge of the top plate 11 is also provided with a notch corresponding to the top plate positioning protrusion 31; Snap on the surface of the top plate 11 to fix the top plate 11 and the motor end cover 3 together.

As shown in FIGS. 3 to 6, the motor end cover 3 includes an end cover housing 60 and a connector 50. The connector 50 includes a connector housing, an insert 53 and terminals 84, 85, 86, 87. The insert 53 is detachably connected to the connector housing. In this embodiment, the end cover housing 60 and the connector housing are formed as a whole by injection molding. In other embodiments, the end cover housing 60 and the connector housing can also be separately formed, and then assembled, connected and fixed.

In this embodiment, the end cover housing 60 includes an integrally formed end cover housing 61 and a mounting portion. The end cover shell 61 is substantially hollow and cylindrical. The mounting portion is preferably an annular mounting plate 62. The mounting plate 62 extends from the inner wall of the end cover shell 61 and divides the space in the end cover shell 61 into two cavities. For convenience of description, in this embodiment, the cavity facing the stator housing 1 side is referred to as a first cavity, and the cavity facing the top plate 11 side is referred to as a second cavity. The center of the mounting plate 62 has a circular through hole 63 for receiving the commutator 21.

In this embodiment, the connector housing includes an integrally formed base portion 51 and connector sidewall 52. The base portion 51 is integrally formed outside the end cover casing 61. In this embodiment, the base portion 51 is provided with a plurality of insertion grooves 510 for inserting the terminals 84, 85, 86, and 87, respectively. The connector side wall 52 has a substantially hollow column shape. The connector side wall 52 extends from the outer periphery of the base portion 51, and an opening is formed at the end away from the base portion 51. In this embodiment, the connector side wall 52 on the side of the connector housing facing the end cover shell 61 is provided with a communication notch 100 to facilitate insertion of the insertion terminals 84, 85, 86, 87.

In this embodiment, the motor end cover 3 further includes a first inductor 71, a second inductor 72, a first brush 81, a second brush 82, an overheat protection element 83, and a circuit board 90. The first inductance 71, the second inductance 72, the overheat protection element 83, the first brush 82 and the second brush 82 are mounted on a plane of the mounting plate 62 and are located in the first cavity. The circuit board 90 is mounted on another plane of the mounting board 62 and is located in the second cavity. By designing the circuit board 90 and the brush in different cavities, the dust generated by the brush during the friction process can be prevented from entering the circuit board 90 and causing a short circuit. In this embodiment, one ends of the first terminal 84, the second terminal 85, the third terminal 86, and the fourth terminal 87 are mounted on the base portion 51, enter the first cavity through the communication gap 100, and then penetrate The mounting board 62 is connected to the circuit board 90. In this embodiment, the first terminal 84 is connected in series with the first inductor 71 and the first brush 81 in this order. The second terminal 85 is connected in series with the overheat protection element 83 (thermistor), the second inductor 72, and the second brush 82, wherein the inductor and the brush can be connected by a conductive connecting piece 88. Since the overheating protection element 83 and the second inductor 72 are in a series relationship, in other embodiments, the connection order of the two may be reversed.

As shown in FIG. 5, the mounting plate 62 of the end cover housing 60 is formed with two vertical receiving slots 620 for placing the two inductors. The vertical axis of the accommodating groove 620 is perpendicular to the mounting portion 62 so that the inductor can be vertically mounted on the mounting portion 62. In addition, two brush boxes are formed on the mounting plate 62. The first brush 81 and the second brush 82 are slidably accommodated in two brush boxes, such as the brush box 621 corresponding to the second brush 82 in FIG. 5. As shown in FIG. 3, two spring posts are formed on the mounting plate 62, and a spring is sleeved on each spring post. The two springs respectively correspond to two brushes, such as the spring 89 corresponding to the second brush 82 in FIG. 3. One end of each spring abuts on the mounting plate 62, and the other end abuts the rear end of the brush (ie, the side of the brush away from the commutator 21), so that the first brush 81 and the second brush 82 pass through The corresponding springs are in frictional contact with the commutator 21.

The connector 50 will be further specifically described below with reference to FIG. 5. In this embodiment, the connector side wall 52 extends from the outer edge of the base portion 51 perpendicular to the base portion 51 and along the axis of the end cover shell 61. The connector side wall 52 and the base portion 51 enclose a cavity 54. 7-9, the insert 53 includes a body portion 531. In this embodiment, the body portion 531 has a substantially square plate shape, and the body portion 531 can be inserted along the extending direction of the connector side wall 52 to form a connection with the connector housing. Preferably, the body portion 531 is connected to the inner side of the connector side wall 52, the side of the body portion 531 facing the cavity 54 is parallel to the axis of the connector side wall 52, and a groove 530 is provided on this side. The groove 530 extends from near the bottom end of the body portion 531 to the top end of the body portion 531. In this embodiment, the groove 530 penetrates the body portion 531 along the thickness direction of the body portion 531, that is, a through hole is formed.

Preferably, the left and right ends of the body portion 531 of the insert 53 are in contact with the side walls 52 of the two adjacent connectors, the bottom end of the body portion 531 is provided with a first limiting portion, the first limiting portion and the base portion 51 snap connection. The top of the body portion 531 is provided with a second limiting portion, and the second limiting portion is buckled and connected to the top of the connector side wall 52. Specifically, as shown in FIG. 8, the base portion 51 is adjacent to a side wall and a snap hole 522 is formed corresponding to the insert 53. The first limiting portion of the insert 53 includes two A buckle 534 extending from the bottom end is engaged with the buckle hole 522. In this embodiment, the buckle 534 is L-shaped, two steps 521 are formed at the bottom of the buckle hole, and the buckles 534 are respectively hung on the bottom ends of the corresponding steps. Preferably, the buckle 534 is an elastic member. Understandably, the buckle 534 may not be completely L-shaped, for example, the included angle of the two sides of the buckle is slightly larger than 90 °, which is also feasible. As shown in FIG. 9, the second limiting portion of the insert 53 is folded outward from the top end of the body portion 531. In this embodiment, the top of the second limiting portion and the body portion 531 are both inverted U-shaped, including a horizontal section 532 and a vertical section 533. The horizontal section 532 extends along a direction perpendicular to the top of the body section 531, and the vertical section 533 is formed from The outer end of the horizontal section 532 extends in a direction substantially parallel to the body portion 531, so that a receiving gap is formed between the second limiting portion and the body portion. When the insert 53 is inserted into the connector housing, the top of the corresponding portion of the connector side wall 52 is snapped into the receiving gap, thereby forming a snap connection. Preferably, the thickness of the top end of the corresponding portion of the connector side wall 52 is reduced relative to other portions, so that after the insert 53 is inserted, the outer surface of the second limiting portion of the insert 53 and the connector side wall The outer surface of 53 is basically flush. Preferably, the top end of the corresponding portion of the connector side wall 52 is lower than the other top ends of the connector side wall 53 except for the corresponding top ends, so that after the insert 53 is inserted, the top end of the second limiting portion and the connector side The other top ends of the wall 53 except for the corresponding top ends are on the same horizontal plane. The use of this matching structure between the insert 53 and the connector housing not only has a simple structure, but also can well prevent the insert 53 from moving up and down, left and right relative to the connector housing.

In the motor end cover 3 of the present invention, the connector 50 and the terminal together serve as a female connector. When it is necessary to make electrical connection with the motor, it is only necessary to insert the male connector with the protrusion matching with the groove 530 into the cavity 54 of the female connector; the cooperation between the protrusion and the groove 530 can make The male connector and the female connector are connected together quickly, accurately and stably.

In a specific implementation, the groove 530 on the insert 53 may also be provided at different positions of the insert 53 to distinguish end caps corresponding to different types of motors; as shown in FIG. 10, the male connector and the female connector A-A ', B-B', C-C ', D-D', F-F 'pairing diagram (MM indicates groove 530, MN indicates protrusion). Of course, in order to further enhance the distinguishing effect, it is also possible to make the insert 53 adopt different colors to correspond to different types of motors. By detachably connecting the insert 53 to the connector housing, a specific insert 53 can be inserted to match different male connectors without changing the design of the rest of the end cap, thereby enhancing the versatility of the end cap, There is no need to redesign and process the entire end cap as in the prior art, while also avoiding dimensional deviations caused by different processing processes.

FIG. 11 is a partial schematic view of the motor end cover in the second embodiment of the motor according to the present invention. Among them, the same parts as in the first embodiment will not be repeated here. The difference between this embodiment and the first embodiment is that the position of the groove 530 on the insert 53 is different. Compared with the first embodiment, the groove 530 of this embodiment is closer to the center line of the width of the insert 53.

Fig. 12 is an exploded view of the connector in the third embodiment of the motor according to the present invention. Among them, the same parts as in the first embodiment will not be repeated here. The difference between the connector in this embodiment and the connector 50 in the first embodiment is that there is no communication gap on the side of the connector side wall 52 facing the end cover shell 61; the connector also includes A plurality of terminals 511 on the base portion 51, one end of the terminal 511 is located in the connector side wall 52 and extends from the base portion 51 toward the opening of the connector side wall 52, and the other end of the terminal 511 is located The side wall 52 of the connector is outside.

FIG. 13 is a partial schematic view of the motor end cover in the fourth embodiment of the motor according to the present invention. Among them, the same parts as in the first embodiment will not be repeated here. 14-16, the difference between this embodiment and the first embodiment is that: the side wall 52 of the connector facing the end cover shell 61 does not have a communication gap; the connector also includes insert molding to the base A plurality of terminals 512 on the portion 51, one end of the terminal 512 is located in the connector side wall 52 and extends from the base portion 51 toward the opening of the connector side wall 52, and the other end of the terminal 512 is located on the The connector side wall 52 is outside; furthermore, the fitting structure of the insert 53 and the connector housing is also different.

Specifically, the bottom end of the body portion 531 of the insert 53 only extends in the middle to form an elastic member 535, and the elastic member 535 is generally L-shaped. Accordingly, only a long strip is formed in the locking hole 522 of the base portion 51 In the shape of a step 525, the elastic member 535 is hung on the bottom end of the step 525. Preferably, the bottom end of the side wall 52 of the connector corresponding to the side of the buckling hole 522 is also recessed inwardly to form a concession groove 523 to facilitate the insertion of the elastic member 535 into the buckling hole 522 and the step 525 for clamping. Unlike the solution in which the outer surface of the vertical section 533 of the limiting portion in the foregoing embodiment is flush with the outer surface of the connector side wall 52, in this embodiment, the top of the connector side wall 52 is provided for accommodating the limiting position The accommodating groove 524 of the vertical section 533 of the portion has a U-shaped tip at a cross section along the thickness direction of the connector side wall 52, thereby forming the accommodating groove 524. Wherein, the top of the connector side wall 52 is located outside the receiving groove 524 higher than the portion located inside the receiving groove 524. After the insert 53 is inserted, the horizontal section 532 of the restricting portion hangs on the portion of the top of the side wall 52 of the connector located inside the receiving groove 524, and the vertical section 533 of the restricting portion is received in the receiving groove 524. In this embodiment, after assembly, the top end of the horizontal section 532 of the limiting portion and the top end of the connector side wall 52 outside the accommodating groove 524 are on the same horizontal plane.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention within.

Claims

A connector, characterized in that it includes a connector housing and an insert, the connector housing includes an integrally formed base portion and a connector side wall, the connector side wall extends from the outer periphery of the base portion, and is connected An opening is formed at the end of the head side wall away from the base, and the insert is detachably connected to the connector housing. The insert is provided with a groove extending from the opening toward the base.
The connector according to claim 1, wherein the insert includes a body portion and a limiting portion, the limiting portion extends outward from the top end of the body portion and is folded, the An accommodating gap is formed between the limiting portion and the body portion, and the accommodating gap is used to accommodate the corresponding top end of the side wall of the connector.
The connector according to claim 2, wherein the limiting portion and the top end of the body portion are both in an inverted U shape, and the outer side of the limiting portion is flush with the outer side of the side wall of the connector where the corresponding top end is located The top end of the limiting portion is on the same horizontal plane as the top end of the side wall of the connector except the corresponding top end.
The connector according to claim 2, wherein the limiting portion and the top end of the body portion are both in an inverted U shape, and the corresponding top end of the side wall of the connector is provided with an accommodating portion for accommodating the limiting portion groove.
The connector according to claim 2, wherein the insert further includes another limiting portion, the other limiting portion extends from a bottom end of the body portion, and the base portion corresponds to The bottom end of the body part is provided with a snap hole that is snap-fitted with the other limiting part.
The connector according to claim 5, wherein the other limiting portion is a substantially L-shaped elastic member extending from the bottom end of the body portion, and a In the step, the elastic member is hung on the bottom end of the step.
The connector according to claim 5, wherein the other limiting portion is two substantially L-shaped elastic members extending from the bottom end of the body portion, Two steps are formed at the bottom, and the two elastic members are respectively buckled on the bottom ends of the corresponding steps.
The connector according to claim 2, wherein the body portion is substantially plate-shaped, and the left and right ends of the body portion are in contact with the inner sides of the side walls of the two adjacent connectors.
The connector according to claim 2, wherein the groove penetrates the body portion in the thickness direction of the body portion.
The connector according to claim 1, further comprising a terminal, a side wall of the connector on one side of the connector housing is provided with a communication notch, and an insertion groove for inserting a terminal is provided on the base portion.
The connector according to claim 1, further comprising a terminal provided on the base portion by insert molding, and one end of the terminal is located in the side wall of the connector and faces from the base portion toward The opening extends, and the other end of the terminal is located outside the side wall of the connector.
A motor end cap, characterized in that it includes an end cap shell and the connector according to any one of claims 1 to 11, the end cap shell includes an end cap shell and a mounting portion, and the end cap shell A substantially hollow cylindrical shape, the mounting portion is vertically provided in the end cover housing and divides the space in the end cover housing into two cavities, the base portion is connected to the outside of the end cover housing, the end cover housing , The mounting part, the base part and the side wall of the connector are integrally formed.
The motor end cover according to claim 12, wherein the motor end cover further includes a circuit board, an inductor and a brush, the circuit board is provided on the mounting portion and located in one of the cavities, the inductor and The brush is provided on the installation part and located in another cavity.
A motor includes a stator and a rotor. The stator includes a stator housing and a permanent magnet fixed to an inner wall of the stator housing. The rotor includes a rotating shaft, an iron core and a commutator fixed on the rotating shaft, and a winding wound on the iron core It is characterized by further comprising the motor end cover according to any one of claims 12 to 13, the motor end cover being connected to one end of the stator housing.